Ventilating cars



(No Model.) J. D. BIRMINGHAM.

VE NTILATING CARS No. 249,220. Patented Nov. 8 ,1881

UNITED STATES PATENT OFFIC VENT! LATING GARS.

SPECIFICATION forming part of Letters Patent No. 249,220, dated November 8, 18 81.

Application filed December 13, 1880. (No model.) 7 v To all whom it may concern:

Be it known that], JOHN D. BIRMINGHAM, of WilkesBarr, Pennsylvania, have invented a new and useful Improvement in Ventilating Cars, of which the following is a specification.

.Heretofore cars have been cooled and ventilated by opening doors, registers, windows, 850. By these devices no current of pure cool air is supplied, but the current has been intermixed with dust, gases, smoke, cinders, and

the like.

. chamber, hereinafter described.

The object of my invention is to provide a means for ventilating, consisting in tubes or pipes made of wood, metal, or any other suitable substance located on'the roof of the cars or otherwise suitably placed in relation to the cars, and which project over thetender and locomotive, as shown in the annexed drawings, and as now fully pointed out in the claim hereto affixed.

In the drawings, Figure 1 is a vertical section of a train, showing pipes and cooling- Fig. 2 is a top view of the same. Fig. 3 is a vertical view, in perspective, of the cooling-chamber, showing coiled perforated water-pipes and iceshelves.

Like letters refer to the same parts in all the views.

A A represent pipes which convey the air to the cooling-chamber B, which chamber is located on the locomotive and is furnished with a coiled tube, O, suitably perforated to permit jets of water to be conveyed to the center of the air-tubes, thus bringing the air in contact with water-sprays as it enters and leaves the chamber B. This pipe 0 is to be connected with a pump or other device for supplying water to the cooling-chamber.

From the cooler themain air-conductor eX- tends over the root of the cars with. connections between the cars made'of canvas, rubber, or other suitable flexible material.

Air-branches of the main pipes are to be let through the roof of each car of the train, as at H. Thesebranches will connect with the pipes in each car, the pipes running lengthwise of each car, with escapesat such distances as may be necessary.

The substance used for connecting the airtnbesbetwcen the cars should be elastic and formed so as to yield and conform to themotion of the cars.

I claim as my invention in this application- The combination, with the pipes extending from in front of the locomotive for the purpose of conveying the air to the cars, of the cooling-chamber located in advance of the train, whereby the air is cooled before it is admitted into the cars from the pipes extending along and upon the roof of the cars, substantially as shown and described.

JOHN D. BIRMINGHAM.

Witnesses:

HnNnRtoK B. WRIGHT, W. S. PARSONS. 

